It is possible that the main title of the report Marfan Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
As Jenny points out, being able to lisp the alphabet song at age two has little to do with 'knowing' the alphabet. And, yes, most children learn the letters by sight and sound in kindergarten, although most are capable of learning this information sooner if diligently taught by parents or others.
If youâre able, this should start when they are an infant and continue through their school years. Read books with stories they comprehend; at a young age this may lead you to read 3-4 small books a day. Books that combine other senses besides listening help your small child to comprehend the story as you read it. For example, read many books that have pictures, tactile pages, sounds, or have accompanying scents.